Plane-iron cap.



No. 707,368. Patented Aug. 19, |902. J. A. TAuT & H. s. WALTER.y

PLANE IRON CAP.

Application led Apr. 26, l1902.)

(No Model.)

Wzl/ef'.

UNITED STATES f PATENT OFFICE.

JUSTUS A. TRAUT AND HENRY S. WALTER, OF NEW BRITAIN, CONNECTI- CUT, ASSIGNORS TO STANLEY RULE AND LEVEL COMPANY, OF NEW BRITAIN, CONNECTICUT, A CORPORATION OFv CONNECTICUT.

'Platin-moti CAP;

SPECIFICATION frmng"part 0fy Letters Patent N0. 707,368, dated August 19, 1902.

Application filed April 26, 1902. `Serial No. 104,811. (No model.)

To @ZZ whom it may concern,.-

Be it known that we, JUsrUs A. TRAUT and HENRY S. WALTER, citizens of the United States, residing at New Britain, in the county of Hartford, State of Cn'ne`cticut,"have invented certain new and useful Improvements in Plane-Iron Caps, of which the following is a full, clear, and exact description.

Our invention relates to improvements in 1o planes, and particularly to plane-iron caps.

It consists, mainly, in the improvement of what is termed the cap-iron or cap-piece in that class of planes in which the plane-iron is clamped to a frog by means of a screw or cam. By this invention we are able to construct a plane-iron cap much cheaper than heretofore and more efficient and durable, as well as more adaptable to the uses to which it may be put;

zo In the drawings, Figure 1 is a side elevation of a plane embodying our invention. Fig. 2 is a plan view of -that partV of the plane to which our invention relates. Fig. 3 is a longitudinal section on the center line of Fig. 2.

Fig. 4 is a cross-section on the line X X of Fig. 2 looking in the direction of the arrows.

l is a plane-stock.

2 is aplane-iron.

3 is a forward handle.

4 is a rear handle.

5 is what is commonly termed a cap-screw, secured to a frog or support 6 for the planeiron. The cap-iron 9 is so shaped and constructed as to be engaged at an intermediate point by the head of the screw 5 and at each end to bear upon the' plane-iron or a plate, such as commonly associated therewith. In the drawings, Fig. 1, the cap is shown as engaging the forward or lower edge of theplane- 4o iron and engaging the upper portion by means of a cam-pressed spring 7, 8 being the cam' employed f or clamping the parts. Thus far described the construction and operation of the parts arewell known, and'hence need not be described in detail.'

In practice itis essential that'the cap-iron shall be very strong and desirable that it be light in weight, and to that end I construct it, preferably, of wrought or sheet metal. The cap-iron includes a broad blade-like portion lO.

landfconsequently give greater rigidity to-it 'ein a lengthwise direction than transversely.

I tion 91 and a narrower shank 10. The lower edge of the portion 91 engages with the planeiron or apart thereof near the cutting edge, while the cam 8 is carried on the shank por- The cap then is subjected tostrains" in a manner similar to a beam supported at the ends and loaded in the middle. For this reason in order to provide sufficient strength the edges of the shank 10 and a portion of the broader part 9 of the plane-iron are bent down at an angle to provide side bars or flanges 101 integral with the body portion of the plane-iron, and hence contributing to the plane-iron great rigidity and strength. Furthermore, the iianges provide a recess in which to receive the pivot-bearing 81 for the cam 8. In addition to this feature of construction, which contributes substantially to the strength of the cap-iron, we provide a cor rugation 11, which preferably commences in 7o the shank portion 10 of the cap-iron` and extends downwardly towardthe broader portion on opposite lilies. In addition to these'corrugations shorter corrugations l2 12 may be provided iu the broader portion of the ycap-iron, contributingvastly to the rigidityand strength of the device,`which is preferablycurved, as shown best in the sideviews numbered land 3. The particular constructionpreserves the curved outline of the cap-iron and permits the employment of comparatively light-wrought or sheet metal. The flanges 101 form a pocket in which to receive one end 'of the springg', which is preferably'iixedly-secured to the capiron, as well as a pocket for the bearing end 85 of the cam 8 adjacent tothe pivot or'pin'Sl, uponwhich said cam turns. All of the ribs or corrugations extend generally in a longi-l tudinal direction relatively to the cappiece,

It is advantageous to have the greater strength extend in longitudinal lines. Should thegage of the metal employed in shaping the cappiece be so light as to permitany flexibility,

it would be in a transverse directionat the lower edge only, and hence-advantageousi permitting the lower edge of said cap-piece to yield and bear uniformly against the planeiron or the plane-iron plate, which is usually roo employed therewith in planes of the class to which our invention is particularly applicable. In Fig. 4 it will be seen that the ribs are preferably hollowed on the under side, the said View showing the under side of said cap-piece uppermost.

What We claim, and desire to secure by Letters Patent, is

l. In a plane, a cap-iron having flanges on opposite sides at its upper end, and ribs extending longitudinally of said iron.

2. A plane-iron cap for a plane having corrugations or ribs extending longitudinally thereof, substantially as described.

3. A plane-iron cap for a plane having corrngations or ribs l2 and l2 in the body and extending longitudinally thereof, as described.

4. A plane-iron cap for a plane having corrugations or ribs ll extending up the shank and 12, 12 in the body extending longitud-inally thereof, substantially as described.

Signed at New Britain, Connecticut, this 24th day of April, 1902. l

JUSTUS A. TRAUT. HENRY S. WALTER. Witnesses:

W. J. WORAM,

lvERETT G. HOFFMAN. 

